Grinding or honing device.



J. L. WALKER. GRINDING 0R HONING DEVICE.

- APPLICATION FILED DEC. 23, 1910. 1,012,771, Patented Dec.26,1911.

3 SHEETS-SHEET 1 ATTORNEYS J. L. WALKER. GRINDING 0R HONING DEVICE. APPLIOATION FILED DEC. 23, 1910.

1,012,771 Patented Dc.25, 1911.

3 SHEETSSHEET 2.

I11" 2? so 111 III" INVENTOR- 9W M4 @b/Shwd v ATTORNEYS Q I 11.] UQQALuWElKEY J. L. WALKER. GRINDING 0R HONING DEVICE.

APPLICATION FILED DEC. 23, 1910.

Patented Dec. 26, 1911.

3 SHEETS-SHEET 3.

.JOHN L, WALKER,'OF NEWARK, NEW JERSEY.

GRINDING on nomne nnvron 1,012,771; sp i i t'e 1 n tg Patented Dec.26,1911.

Application filed heoen'iber'23, 1910. 'Serial Io. 599,000.

'To all whom a may mam.-

Be it known that I, JOHN L. WALKER, a

' citizen of the United ,States, residing at vthereon, which form a part of thisspecifica Newark, in the county of Essex and "State of New Jersey, have invented certain new and useful Improvements in' Grinding-or Honing Devices; and Ida hereby declare the followingtobe a full, clear, and exact description of the invention, such as will enable others skilled in the art towhieh it appertains tomake and-use the same, reference being had to the accompanying draw ings, and to characters of reference marked tion. i The present invention has reference, generally, to improvements in-grinding or hon-- ing devices; and, the present invention refers, more-particularlmto a novel grinding or honing device whichv is particularly adapted for use with leather-splitting machinery for automatically sharpening the of a splitting knife connected therewith. i

running band or endlessblade or'belt-knife The invention has 'for its principal'ob- 'ject to provide a simple and efficient con.-

struction-of grinding or honingjdevice, so constructed, and arranged that it may be easily and'quickly attached to any style of leather-splitting machine; but, in fact, the same mayibe used in connection with other machinery where it is desired to maintain a knife or cutting-edge in a sharpened con? dition. 1 I V The invention has for a further objec t/to provide a self-adjusting, grinding lor ho nin' device, the members of which are adapted to automatically maintain t;h'emselves in their operative relation with the runningblade. of asplitting 'knife on a leathersplitting machine.

Other objects of, the present invention not at this time more particularly enumerated,

' will be clearly understood from the-follow ing detailed description of the present in vention..

With the various objects of the present invent-ion in view, the saidinvention consists, primarily, in the novel grinding o'rrhoning device, hereinafter set forth; and, furthere more, this invention consists in the'several novelarrangements and combinations of the var'iou'sdevices and parts, as well as in thet details of the construction thereofii'all of which will be hereinafter more fully dey leather splitting machine.

'ing devices therefor.

grinding elements,

scribed and then finally'emhodied in the clauses of .the claim which are appended to and which form an essential part of this specification.

- he invention is clearlyrillustlated 1n the accompanying drawings, in which 2 Figure l is'a front elevation of the end ,portion ofonesty-le of leathersplitting ma chine, the same ,being equippedwith a grinding or honing device, showing one embodiment of the principlesof my present invention. Fig.' 2 is a large front elevation of the novel construction of grinding or honing devicein its operative relation with the running blade of a splitting knife on a Fig. 3 is a de-' tail horizontal section of the same, said section being taken on'line 3. 3 in said Fig. 2, looking downwardly. Fig, 4' isa detail vertical longitudinal section of one of the grinding or honing elements and the mount-- Similar characters of reference are employed in all of the hereinabove described views, to indicate corresponding parts;

Referring now to the saiddrawings, the I reference-character 1 indicates any desirable style of leather-splitting-machine which is.

providedwith a splitting knife comprisinga running-band or blade 2' mounted upon the driving and supporting band-wheel 3, in the usual manner.

The said band or.

blade 2 runs in the direction of thearrow 1 shown in ig. 1, of the drawings, and the same is provided with the usual groundcutting edge 4. The leathersplitting ma- The reference-character 6 indicates one form of complete grinding or honing device embodying, the principles of the present invention, the same being constructed in such a manner, so that it may be'attached in any. convenient loc'atlon to a portion of the frame-work, or ,rigid part of said leather splitting machine, as for example, the

bracket or arm. 7. The said. grinding or honing device 6 comprises a bracket or clamping element 8 which is seen? ed to-said bracket or arm 7 by means of bolts and nuts orset-screws-t); or, it may be secured in positlon by means of any other suitable fastening means. The said bracket or clamping element is arranged to support and carry a downwardly depending baseplate 10 with which grinding or honing elements.

are adjustably connected and are supported thereon. Said base-plate 10 is provided with a pair of tapered faces 11, inclining rearwardly from the central longitudinal line of said base-plate 10, and thebody-portions I of said base-plates 1O which provide said fio inclined or tapered faces 11 are ;each provided with longitudinally extending slots or openings 12. Arranged upon each of said inclined or tapered faces 11 1s a movable supporting block 13, the same being provided with rearwardly extending studs or screw-like shanks 14, which pass through said slots or openings 12, and upon the free .end-portions' of which are arranged and adapted to receive suitable washers l5 and nuts 16 for'securing said supporting block13 '-in any desirable and vertically adjusted position upon said base-plate 10, so as to raise or lower the grinding or honing elements which are supported by said supporting block 13, as Will be clearly evident. Said supporting blocks 13 are each provided with a transverse opening 17 forming an interior chamber, and extending outwardly 1 from the marginal edges of. said openings supporting block 13.

'' pin 19, in the manner shown, and whereby 17 are a pair of perforated ears or lugs 18, preferablyforming an integral part of said The reference-character 19 indicates a journal pin, the same being provided with a transverse pin or pintle '20, the respective free endsof which are journaled in the perforations of said ears or lugs '18, to pivotally supportsaid journal the same is capable of a swinging movement in a vertical plane. Loosely-mounted upon the outer endof said'journal pin 19 is the- I hub 21 of a yoke-member 22, said hub 21 being provided upon e'achof its side-portions with an elongated opening or slot 23, through which pass the respective endportions of said pin or pintle 20, thus providing a means for retaining said hub 21in its operative relation with said journalpin 19,

and at the same time permitting a limited swiveling action of said hub 21 and its yoke like member 22 upon the end of saidjournal-pin '19. The free ends of the arms, of said yokelike member 22 are provided with split collars or socketed' portions 24 having perforated ears or lugs 25 in which is op--' eratively arranged a binding'or tightening screw 26 for drawing the separated portions of said split collars or socketed portions 24 together so as to rigidly secure therein a bearing-block 27, WlliQll is provided with a conical depression or bearing-seat 28 in the inner end tirereof. Mounted between and in engagement with thebearing blocks 27 thus arrangedis a spindle or short shaft'29, the

free endsof which are provided with conical journal portions 3O suitably seated ins'aid conical depressions or bearing-seats 28', of

the respective bearing-blocks 27, so that said spindle or short shaft 29 may be capable of a-free revolving action. Said spindle or shortshaft 29 is further provided with a shoulder or annular flange 31, and that portion of the spindle, whichextends beneath said shoulder or annular flange, is provided withscrewthreads 32. Q Mounted upon said screwthreaded portion ofsaid' spindle or shaft 29,

and rigidly connecting the same therewith by forcin'g'the same against said shoulder or annular flange 31 byineans of a washer 33 and a nut 34, is a grinding or honing-element '35, said grinding or honing element being circular in form and providing suitv able grinding or honing portions 36 at its periphery, of any suitable material. The inner end of said journal pin 19, which projects into the openings 17 of said supporting blocks 13, is provided with aperforate and forked end 37, to which is Qivotally se cured by-means of a pivot or pin38, the ear '39 of a screw-threaded rod 40. The said rod 40 extends through an opening 41in the endportion 42. of said supporting block 13, and, :being slidably or rnovably arranged therein,

is adapted to be guided in its movement by said opening41, as will be clearly under stood., A nut 43 is arranged upon saidlrod 40 above the said end-portion 42 of said supporting block 13, and a coiled spring 44 is mounted upon and encircle's'the said rod 40 between said end-portion 42' of said support,

ing block 13 and said nut 43, said=nut 43 serving as a means for increasing or dewardly projecting free end and said end- '-creasing the operative tension of said coiled spring. In like manner, a thumb-nut 45 is arranged upon'sald rod 40 between its outportion 42-of said supporting block 13. A

.coiled spring 46 i s also mountedupon said 'rod- 40','and encircles the same between the end-portion 42 of-said supportingablock 13 and said 'thumb-'nut"45,'said thumb-nut 45 serving as a means for increasing or decreasing the operative tension of said coiled I out burning or otherwise injuring the same.

In'pra'ctice, the said supporting blocks 13 are arranged upon said base-platelO, the reverse from one another, so that their respective grinding or honing elements 35 are canted in opposite directions, and so that their grinding or honingportions 36 will respectively engage the upper and lower sides of the cutting edge 4 v of said band or I blade 2. The inclinationof the faces l l of the claim which Hence, I do not li it my invention to the said base-plate 1 permits the said grinding or honing elements to be compactly arranged side by side, and'yet provides a suliicient spread which allows the grinding or honing elements to work freely without any interference one with the other. The said coiled. spring/L4 is so adjusted that its tension slightly overbalancesthe tension of the :coiled spring. d6, the degree of this over-.

balancing'determining the'degree o'f pressure with which the grinding or honing por- ,tions of each grinding element bears upon the cutting edge 4 of said running band or blade 2; and, as will be clearly evident, a great delicacy of adjustment inthis respect thereby possible. It will be clearlyunderstood, that the tension 'of said coiled spring 44, as thus'controlled, is transmitted through the rod 40 and jounral-pin .19 to the yoke-like member 22, in which-'sai'd grinding or honing element 35 is mounted.

The said grifiding'or honing elements 35, being mounted so as to revolve freely, are

feather-edge from the previously rough 7- ground knife or. blade. Said base-plate 10, at. its upper portion, is provided with an outwardly projecting arm 'or bracket 47 upon which is supported, in any suitable manner, an oil-cup "or reservoir 48. A. tu-- bular pipe or duct 49 leads downwardly from the said oil-cup or reservoir 4 said pipe or duct being provided withbutletdrip or nozzles 50 which will feed oil or other lubricant upon the grinding or honing portions 36 and the band or blade 2, as

desired, thus keeping the same always lubricated and materially aiding in the proper smooth grinding or hbning vice will eifectively accommodate itself to both sides of the cutting edge of a band or blade, and will automatically maintain itself in its proper grinding and honing re.

lation therewith, once it has been properly adjusted.

. I am awarethat changes maybe made in the various arrangements and combinations of the several devices and parts, as well .as in the details of the construction thereof, without departing from the scope of my present invention, as set forthin the forcgolng specification and as defined in the clauses of re appended thereto.

exact arrangements and combinations of the devices and parts as of the cutting, edge lof said band-blade 2. ItwilLthusbe seen, that my novel grinding or honing d eally inclined portions,

means adjustably connected with said laterspectively,

described in the said specification, nor do I confine myself to the .exact details of the'construction of the said parts, as illustrated in the accompanying drawings. V

IcIa1m:--

1. :An attachable grinding or honing de vice comprising a ba'selate provided with laterally inclined 'portlons, each laterally inclined portion being provide'd with a longitudinally extending slot, means for attaching'said base-plate to a machine, supporting blocks provided with 'rearwardly extendlng stud-like *screws, said stud-like screws. of the respective supporting blocks vpassingtthrough the respective slots of the inclined portions of said base-plate, washers and nuts upon said stud-like screws, to bind said respective supporting blocks in any. desirable and vertically adjusted rela tion withthe. respective inclined portions of said base-plate, 'a yoke-like member pivotally connected with each supporting block,

a short spindle or shaft mounted so as to, revolve between the free ends of said yokelike-member, grinding or honing elements secured upon each of saidspindles or shafts,

and means" for automatically maintaining said grinding or honing elements in contact, 7 respectively, with the upper and lower sides of the cutting edge of a runnin band or blade with any desirable degree 0 pressure, substantially as and for the purposes set fdrth.

' 2. An attachable grinding or honing device comprising a clined faces, means for adj'ustably supporting in connection with said base-plate a pair of revolving grinding or honingelements, and means, for automatically main 'taining said grinding or honing elements 105 in contact, respectively, with the upper and lower sides of the cutting edge of a running ,band or blade with any-desirable degree of pressure,substantially as and for the pur poses set forth.

3.'An attachable grindingor honing device comprising a. base-plate} having. later-- yoke like members,

substantially as 'and' for the purposes set forth.

4:. In an attachable grinding or honing the combination with a base-plate,

device, of a pair of supporting blocksadju'stably connected therewith, a journal-pin pivotally connected with each supporting. block, a

base -plate having in- =or honing elements with the upper and lower-sides of. thecutting edge of a runn n band or' bladewitli'any desirable degree 0 pressure,

yoke-like member mounted upon the outer end of each journal-pin, each yoke-like member being capable of a limited swiveling action upon its journal-pin, bearing-blocks secured-to thefree ends Y of said yoke-like members, a spindle or shaftjournaled b'etween said bearing-blocks, 'a grinding or pressure, comprising "a rod slidably ark ranged with relation to each supportlngblock and pivdtally connected withthe inv ner end of said journal-pin, a pair of coiled springs. for actuatingsaid'rod, said springs exerting, respectively, opposite tensional' pulls upon-said rod, and means for adjusting the tension of said sprlngs to cause the tension of one spring to overbalance the tension of the other spring to any desired degree, substantially as and 'for the purposes set forth.

5. In an attachable grinding or honing 7 device, the combination with a base-plate,

of a pair of supporting blocks adjust-ably connected therewith, a journal-pin pivotally connected with each supporting block, a yoke-like member moun'te dupon the outer end of each journal-pin, each yoke-like member being: capable of alimited swiveling action upon its journal-pin, bearingblocks secured to the free ends of said yokelikemembers, a spindle or shaft journaled between said bearing-blocks, a grinding or honing element secured upon each spindle 'or shaft, means for v automatically maintaining said grinding or honing elements in contact, respectively, with the upper and lower sides of the-cutting edge of a running band or blade with any desirable degree-of pressure, comprising a rod slidably arranged with" relation to each supporting bloc-k. and pivotally connected with the inner end of said journal-pin, a pair of coiled springs for actuatin said rod, said springs exerting, respectiv opposite tensional pulls upon said rod, means for adjusting the tension of said springs to cause-the tensionvof one spring to overbalance the tension of the other spring to any desired decomprising screw-threads aranged screw-threads and said coiled springs, substantially as and for the purposes set forth.

6. In an attachable grinding or honing device, the combination with a. base-plate provided with laterally inclined portions, each laterally inclined portion being provided with a longltiuli'nally extending slot, of means -forattaching said base-plate to a machine, supporting blocks'provided with rearwardly extending stud-like screws, said stud-like screws of the respective supportingblocks passing through the respective slots of said inclined portions of the baseplate, washers and nuts connected with said stud-like screws to bind said respective supporting blocks in any'desirable and ver-' tically'adjusted relation with said respec- "tive inclined.portions of the base-plate, a

journal pin pivotally connected with each supporting block, 1 a yoke-like member mounted upon the outer end of each ournal pin, said yoke-like members being capable of a limited swiveling action upon said journal pins, bearing-blocks secured to the free ends of said yoke-like members, a spinfdle or shaftzjo'urnaled between said bearing-blocks, a grinding or honing element secured upon'each of said spindles orshafts so as to revolve therewith, and means for automatically maintaining said grinding or honing elements in contact, respectively, with the upper and lower sides of the cutting edge of a running band or blade with any desirable degree of pressure, substantially as and for the purposes set forth.

7 In an attachable grinding or honing device, the combination with a base-plate provided with laterally inclined portions, each laterally inclined portion being provided with a longitudinally extending slot, of means for attaching said base-plate to a machine, supporting-blocks provided with rearwardly'extending stud-like screws, said stud-like screws of the respective supporting-blocks passing through the respective slots of said inclined portions of the baseplates, washers and nuts connected with' said stud-like screws to bind'said respective supporting-blocks in any desirable and vertically adjusted relation with said respectiye inclined portions of the base-plate, a journal-pin pivotallyconnected with eachsupporting block, a yoke-like member mounted upon the outer end of each journal pin, said yoke-like members being capable of a limited swiveling action upon said journal pins, bearing-blocks securedito the free ends of said yoke-like members, a spindle or shaft journaled between said bearing-blocks, a grinding or honing element secured upon each of said spindles or shafts so as to revolve therewith, means for automatically .maintaining said grinding or honing elements in contact. respectively, with the upper and lower sides of the cutting edge of a running band or blade with any desirable degree of pressure, comprising a rod slidably arranged with relation to each supporting block and pivotally connected with the inner end of said journalto overbalanoe the tension of the other spring set forth above I have hereunto set my hand to any desired degree, comprising screwthis 21st day of Dec. 1910. threads arranged upon said rod and nuts engaging said screw-threads, and said JOHN WALKER 5 coiled springs, substantially as and for the Witnesses:

purposes set forth. FREDK. C. FRAENTZEL,

In testimony, that I claim the invention FREDK. H. W. FRAENTZEL.

Copies of this patent may be obtained for fi ve cents each, by addressing vthe Commissioner of Patents,

' Washington, D. G. 

